Biology 1102
Lecture 5
Slide 2 - Coelomates
Slide 3 – Fertilizing an egg
Slide 4 – Formation of the blastomere
Slide 6 - Blastula
Slide 14 - Gastulation
Slide 7 - Gastrulation
Slide 16 - Neurulation
Slide 17 – radial and spiral cleavage
Slide 10 – Cleavage patterns
Slide 11 – Protostome and deuterostome body plan
Slide 18 – protosomes - schizocoelom
The blastopore is the single opening of the archenteron and in protosomes, the blastopore forms the mouth.
The development of the mesoderm in protosomes are called schizocoelom which is defined as the developing mesoderm rises from the area near the blastophore where division takes place forming the mesoderm
Slide 19 – deuterostomes - enterocoelom
In deuterosomes, the blastopore (single opening of the archenteron) forms the anus.
The development of the mesoderm is called an enterocoelom which is defined as the developing mesoderm rises from a pair of mesodermal pouch from the primitive gut (endoderm). This pouch enlarges until they meet and fuse
Slide 20 - Mollusca
Slide 21 – Molluscs – internal structure
Slide 22 – Molluscs - bivalves
Slide 23 – Molluscs - cephalopods
Slide 18 – Giant squid
Slide 17 – Molluscs - gastropods
Slide 20 – Segmented worms
Slide 18 – Phylum Annelida – Class Polychaeta
Slide 18 – Phylum Annelida – class Oligochaeta
Slide 20 - Phylum Annelida – Class Hirudinea
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